Where did you take it? I'm having a slight furnace issue as well - and I'm more-or-less located in North Vancouver.
North Shore RV Centre. It's just below Marine Drive, a half-block west of Lloyd on 15th St. Store front is nothing to brag about, but they have room for several RVs inside ( access from the alley ). I let them back it in for me.
I ran the furnace
for an hour the other day and it seems fine.